We additionally hope our work may provide a framework to further study gravitational transformations and dualities in the double copy [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, since it includes the full class of Kerr-NUT-(A)dS spacetimes. Similarly, perhaps the principal tensor can be studied in the single-copy picture, just as NUT charges, geodesics, and Ricci flow have been [7]}, [8]}, [9]}, [10]}. Finally, for, the Kerr-NUT solutions in our family, we would be interested to see if the Weyl double copy in general dimensions can be understood asymptotically, as at null infinity in four dimensions [11]}, [12]}, [13]}, [14]}, [15]}, [16]}.
